Just like any skill... the secret is practice... practice and practice some more.....
But the real question.... who told you.... that you are a good one ????

Worth asking don't you think?
I learn kissing... french kiss in particular, watching Cry baby, when I was 13... it worked, just go rent the movie, maybe it'll help.
But I'm french, and I was sorta born with the gene, as for the regular type of kiss, we kiss all the time, kiss to say Hi, see you, good night, happy birthday, congrats and so on... that's maybe why we get so good at it, but who knows ?